John Isner of the USA plays a forehand against Juan Martin del Potro of Argentina...John Isner of the USA plays a forehand against Juan Martin del Potro of Argentina during Day 5 of the Rolex Paris Masters held at the AccorHotels Arena on November 3, 2017 in Paris, France.LessMore

TOPSHOT - USA's Jack Sock poses with the trophy after winning against Serbia's Filip Krajinovic during the final of the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris. /

TOPSHOT - USA's Jack Sock poses with the trophy after winning against Serbia's...TOPSHOT - USA's Jack Sock poses with the trophy after winning against Serbia's Filip Krajinovic during the final of the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris. /LessMore

USA's Jack Sock holds the trophy 'Fanti's Tree' after winning against Serbia's Filip Krajinovic during the final of the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris.
Sock won the match 5-7, 6-4 and...More

USA's Jack Sock holds the trophy 'Fanti's Tree' after winning against Serbia's...USA's Jack Sock holds the trophy 'Fanti's Tree' after winning against Serbia's Filip Krajinovic during the final of the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris.
Sock won the match 5-7, 6-4 and 6-1. /LessMore

TOPSHOT - USA's Jack Sock celebrates winning against Serbia's Filip Krajinovic during the final of the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris.
Sock won the match 5-7, 6-4 and 6-1. /

USA's Jack Sock celebrates winning against Serbia's Filip Krajinovic during the final of the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris.
Sock won the match 5-7, 6-4 and 6-1. /

USA's Jack Sock reacts as he plays against Serbia's Filip Krajinovic during the final of the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris.
Sock won the match 5-7, 6-4 and 6-1. /

USA's Jack Sock reacts as he plays against Serbia's Filip Krajinovic during the...USA's Jack Sock reacts as he plays against Serbia's Filip Krajinovic during the final of the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris.
Sock won the match 5-7, 6-4 and 6-1. /LessMore

Poland's Lukasz Kubot (L) and Brazil's Marcelo Melo celebrate after winning against Croatia's Ivan Dodig and Spain's Marcel Granollers during the final round of the men's double at the ATP World Tour Masters 1000 indoor tennis...More

Poland's Lukasz Kubot (L) and Brazil's Marcelo Melo celebrate after winning against...Poland's Lukasz Kubot (L) and Brazil's Marcelo Melo celebrate after winning against Croatia's Ivan Dodig and Spain's Marcel Granollers during the final round of the men's double at the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris.
Kubot and Melo won the match 7-6, 3-6 and 10-6. /LessMore

Poland's Lukasz Kubot (front) and Brazil's Marcelo Melo celebrate after winning against Croatia's Ivan Dodig and Spain's Marcel Granollers during the final round of the men's double at the ATP World Tour Masters 1000 indoor tennis...More

Poland's Lukasz Kubot (front) and Brazil's Marcelo Melo celebrate after winning...Poland's Lukasz Kubot (front) and Brazil's Marcelo Melo celebrate after winning against Croatia's Ivan Dodig and Spain's Marcel Granollers during the final round of the men's double at the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris.
Kubot and Melo won the match 7-6, 3-6 and 10-6. /LessMore

USA's Jack Sock poses with the trophy after winning against Serbia's Filip...USA's Jack Sock poses with the trophy after winning against Serbia's Filip Krajinovic during the final of the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris. /LessMore

TOPSHOT - Serbia's Filip Krajinovic reacts as he plays against USA's Jack Sock during the final of the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris.
Sock won the match 5-7, 6-4 and 6-1. /

TOPSHOT - Serbia's Filip Krajinovic reacts as he plays against USA's Jack Sock...TOPSHOT - Serbia's Filip Krajinovic reacts as he plays against USA's Jack Sock during the final of the ATP World Tour Masters 1000 indoor tennis tournament on November 5, 2017 in Paris.
Sock won the match 5-7, 6-4 and 6-1. /LessMore